The 1973 Pontiac GTO represents a fascinating transition point in the history of the Great One, moving into the Colonnade body style. This Copper-finished example is exceptionally rare, being one of only 494 units built on the standard LeMans Coupe chassis without side louvers. Most enthusiasts recall the 1973 model for its mandated 5-mph front bumpers, but this car retains the aggressive GTO DNA. It features the distinctive NACA-type hood scoops that allowed the engine to breathe while signaling its high-performance intent. This vehicle carries a unique piece of drag racing history, as it was autographed by the legendary Arnie “The Farmer” Beswick. With 83,077 miles on the clock, the car balance preservation with tasteful modern upgrades for better drivability. It is scheduled to cross the auction block at Kissimmee 2026 on Friday, January 9th. For collectors, this represents a chance to own a low-production variant of the final classic-era GTO.
Rebuilt 455 V-8 Performance and Mechanical Logic
The heart of this 1973 Pontiac GTO is a 455 cubic inch V-8 engine that has been thoughtfully rebuilt. Rather than sticking to the choked emissions standards of 1973, the builders returned it to 1970 performance specifications. This modification restores the high-torque personality that made Pontiac famous during the height of the muscle car wars. A March Performance serpentine belt drive system was added to improve reliability and provide a cleaner look under the hood. The power is managed by a rebuilt automatic transmission that now features a shift kit for crisper gear changes. Dual exhaust ensures the big block can exhale efficiently while producing a deep, resonant idle. Furthermore, the engine bay is well-sorted, blending original aesthetics with functional modern cooling and charging components. These mechanical choices ensure the car performs with more authority than it did when it first left the showroom.
Chassis Upgrades and Honeycomb Wheel Styling
Handling for this heavy-duty coupe has been modernized through the installation of 17-inch Honeycomb style wheels. These wheels maintain the classic Pontiac look while allowing for modern performance tires with significantly more grip. Power steering and power brakes are included, making this 1973 Pontiac GTO much easier to navigate in modern traffic. The suspension maintains the robust feel of the GM A-body platform, known for its stable and comfortable ride. Because it lacks the side louvers found on many other models, the car has a smoother and more understated profile. The Copper paint shines across the long hood and short deck, emphasizing the unique Colonnade roofline. These styling elements work together to create a vehicle that stands out in a sea of more common muscle cars. It is a well-rounded package that respects its heritage while embracing modern road manners.
Saddle Interior Comfort and Racing Heritage
Inside the cabin, the Saddle interior provides a warm and inviting contrast to the rich Copper exterior paint. The seats and door panels reflect the upscale nature of the LeMans-based GTO, offering plenty of room for passengers. For long summer drives, the factory air conditioning system remains a vital and highly appreciated feature. Entertainment is provided by a Pioneer stereo, tucked away to maintain the dashboard’s classic 1970s layout. The Arnie Beswick signature serves as a constant reminder of the car’s connection to the world of competitive drag racing. Original documentation, including the window sticker and sales invoice, is provided to verify the car’s authentic history. These documents are essential for serious collectors who want to preserve the provenance of a low-production vehicle. It is a space that feels both nostalgic and ready for a modern road trip.
Engine Performance Specs and Technical Highlights
This 1973 Pontiac GTO is powered by a rebuilt 455 CI V-8 engine delivering performance tuned to 1970 factory standards. The drivetrain features a modified automatic transmission with a shift kit and a 12-bolt rear end for consistent power delivery. To improve engine efficiency, a March Performance serpentine belt system has been integrated into the setup. Braking is handled by a power-assisted system that works in tandem with the updated 17-inch Honeycomb alloy wheels. A dual exhaust system provides the necessary flow to handle the increased output of the high-displacement big block. The engine bay also features a factory-style air cleaner assembly that integrates with the functional NACA hood scoops. With 83,077 miles, the mechanical foundations are proven and ready for reliable operation. These specifications define a car built for enthusiasts who actually intend to put miles on the odometer.
Summary of a Rare Copper Colonnade Coupe
The 1973 Pontiac GTO is a vehicle that deserves a second look from anyone who appreciates rarity and original design. As one of only 494 built in this specific configuration, it offers an exclusivity that few other Pontiacs can match. The decision to rebuild the 455 V-8 to 1970 specifications fixes the performance gap typically associated with mid-seventies cars. Its autographed history and extensive paperwork make it a compelling choice for the historically minded collector. The blend of Copper paint and Saddle leather creates a period-correct look that is truly striking under show lights. Modern upgrades like the March serpentine system and 17-inch wheels make it a practical driver for today’s roads. As it prepares for the Kissimmee 2026 auction, its significance in the GTO timeline is undeniable. This is a rare chance to secure a well-documented and powerful piece of Pontiac’s final classic chapter.
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Source: mecum.com
